/// <summary>
/// Instantiates a spline from an individual OBJ file which contains a set of vertices representing the individual points of the spline.
/// </summary>
/// <param name="path">An OBJ file containing the points of the spline as vertices.</param>
public static Spline *MakeSpline(string path)
{
// Store newly created Spline
Spline spline = new Spline();
// Parse individual spline file.
ObjParser parser = new ObjParser(path);
// Spline Information
spline.Enabler = 1;
spline.SplineType = parser.GetSplineType();
spline.NumberOfVertices = (ushort)parser.Vertices.Count;
// Get vertices & calculate total length
SplineVertex[] vertices = MakeSplineVertices(ref parser);
spline.TotalSplineLength = vertices.Sum(x => x.DistanceToNextVertex);
// Write vertices to unmanaged memory
int structSize = Marshal.SizeOf(vertices[0]) * vertices.Length;
IntPtr splineVerticesPointer = Marshal.AllocHGlobal(structSize);
MarshalUtilities.StructureArrayToPointer(vertices, splineVerticesPointer);
spline.VertexList = (SplineVertex *)splineVerticesPointer;
// Write spline to unmanaged memory
int splineSize = Marshal.SizeOf(spline);
IntPtr splinePointer = Marshal.AllocHGlobal(splineSize);
Marshal.StructureToPtr(spline, splinePointer, true);
return((Spline *)splinePointer);
}
